semester screwed up

i dont know how to start, i mean always used to do well in my school. and i swear this is my first time.
ok. i accept i got a back. a.t.k.t. got a back in mechanical(which is my engineering stream also!) so now the funda is i need to clear it in summers. summers in jaipur- cant just imagine.
whatever it may be. i just hope i dont get another back in remaining four years.
that set.